01 -
Set oven to 175°C and line an 20x20 cm baking pan with parchment paper.
02 -
In a large bowl, whisk Greek yogurt, peanut butter, honey, eggs, and vanilla extract until the mixture is smooth.
03 -
Gently fold in oat flour, protein powder, baking powder, and salt until just combined, avoiding overmixing.
04 -
Pour the batter into the prepared pan, smooth the surface, and bake for 18 to 20 minutes until the edges are set and the center jiggles slightly.
05 -
While the base cools, whisk together Greek yogurt, peanut butter, cocoa powder, and honey until smooth and glossy.
06 -
Spread the fudge topping evenly over the warm base to allow proper melding of flavors.
07 -
Refrigerate for at least 30 minutes until set. Slice and serve chilled.